type Dog = {
    name: string
}
type Person = Dog & {
    age: number
}
const person: Person = {
    name: '谁是人',
    age: 18
}
interface Car {
    brand: string
}
interface Car {
    color: string
}
const car: Car = {
    brand: '问界',
    color: 'black'
}
type Cat = {
    name: string
}
const cat:Cat = {
    name:'11'
}
export { person, car ,cat}
